.login-container{
    /* width: 500px;
    height: 500px;
    background-color: rgba(255,255,255,0.6);
    /* text-align: center center; */
    /* margin: auto auto;
    display: flex; */ 
    width: 100%;
    height: calc(100% - 50px);

    /* 为了让login-dialog 垂直水平居中，使用弹性布局 */
    display: flex;
    /* 让其左右居中 */
    justify-content: center;
    /* 让其上下居中 */
    align-items: center;
}

.login-dialog{
    width: 500px;
    height: 400px;

    background-color: rgba(255, 255, 255, 0.6);
    border-radius: 10px;
}

.login-dialog h3{
    font-size: 24px;
    font-weight: 900;
    text-align: center;
    margin: 60px 0;
    
}

/* 针对每一行的样式 */
.row{
    height: 50px;
    width: 100%;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.row span{
    font-size: 20px;
    width: 60px;
}

.row #username{
    width: 350px;
    height: 40px;
    font-size: 20px;
    text-indent: 10px;
}

.row #password{
    width: 350px;
    height: 40px;
    font-size: 20px;
    text-indent: 10px;
}

.row #submit{
    width: 150px;
    height: 40px;
    color: white;
    background-color: orange;
    text-align: center;
    /* 设置文字垂直居中 */
    line-height: 40px;
    /* 去掉按钮默认的边框 */
    border: none;
    border-radius: 10px;
    transition: all 1s;
    margin-top: 50px;
}

.row #submit:hover{
    background-color: gray;
}